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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.12 by root, Wed Jul 20 21:57:04 2005 UTC vs.
Revision 1.175 by root, Wed Dec 1 04:43:12 2010 UTC

1#define _XOPEN_SOURCE 500 1#include "libeio/xthread.h"
2
3#include <errno.h>
2 4
3#include "EXTERN.h" 5#include "EXTERN.h"
4#include "perl.h" 6#include "perl.h"
5#include "XSUB.h" 7#include "XSUB.h"
6 8
9#include "schmorp.h"
10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
7#include <sys/types.h> 14#include <sys/types.h>
8#include <sys/stat.h> 15#include <sys/stat.h>
9 16#include <sys/statvfs.h>
10#include <unistd.h> 17#include <limits.h>
11#include <fcntl.h> 18#include <fcntl.h>
12#include <signal.h>
13#include <sched.h> 19#include <sched.h>
14#if __linux 20
21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
15#include <sys/syscall.h> 22# include <sys/mman.h>
16#endif 23#endif
17 24
18#include <pthread.h> 25/* perl namespace pollution */
26#undef VERSION
19 27
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 28#ifdef _WIN32
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
23 29
24#if __ia64 30# define EIO_STRUCT_DIRENT Direntry_t
25# define STACKSIZE 65536 31# undef malloc
32# undef free
33
34// perl overrides all those nice win32 functions
35# undef open
36# undef read
37# undef write
38# undef send
39# undef recv
40# undef stat
41# undef fstat
42# define lstat stat
43# undef truncate
44# undef ftruncate
45# undef open
46# undef close
47# undef unlink
48# undef rmdir
49# undef rename
50# undef lseek
51
52# define chown(a,b,c) (errno = ENOSYS, -1)
53# define fchown(a,b,c) (errno = ENOSYS, -1)
54# define fchmod(a,b) (errno = ENOSYS, -1)
55# define symlink(a,b) (errno = ENOSYS, -1)
56# define readlink(a,b,c) (errno = ENOSYS, -1)
57# define mknod(a,b,c) (errno = ENOSYS, -1)
58# define truncate(a,b) (errno = ENOSYS, -1)
59# define ftruncate(fd,o) chsize ((fd), (o))
60# define fsync(fd) _commit (fd)
61# define opendir(fd) (errno = ENOSYS, 0)
62# define readdir(fd) (errno = ENOSYS, -1)
63# define closedir(fd) (errno = ENOSYS, -1)
64# define mkdir(a,b) mkdir (a)
65
26#else 66#else
27# define STACKSIZE 4096 67
68# include <sys/time.h>
69# include <sys/select.h>
70# include <unistd.h>
71# include <utime.h>
72# include <signal.h>
73# define EIO_STRUCT_DIRENT struct dirent
74
75#endif
76
77/* perl stupidly overrides readdir and maybe others */
78/* with thread-unsafe versions, imagine that :( */
79#undef readdir
80#undef opendir
81#undef closedir
82
83#define EIO_STRUCT_STAT Stat_t
84
85/* use NV for 32 bit perls as it allows larger offsets */
86#if IVSIZE >= 8
87# define VAL64 IV
88# define SvVAL64 SvIV
89# define newSVval64 newSViv
90#else
91# define VAL64 NV
92# define SvVAL64 SvNV
93# define newSVval64 newSVnv
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109typedef SV SV8; /* byte-sv, used for argument-checking */
110typedef int aio_rfd; /* read file desriptor */
111typedef int aio_wfd; /* write file descriptor */
112
113static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
114
115#define EIO_REQ_MEMBERS \
116 SV *callback; \
117 SV *sv1, *sv2; \
118 STRLEN stroffset; \
119 SV *self;
120
121#define EIO_NO_WRAPPERS 1
122
123#include "libeio/eio.h"
124
125#ifndef POSIX_FADV_NORMAL
126# define POSIX_FADV_NORMAL 0
127#endif
128#ifndef POSIX_FADV_SEQUENTIAL
129# define POSIX_FADV_SEQUENTIAL 0
130#endif
131#ifndef POSIX_FADV_RANDOM
132# define POSIX_FADV_RANDOM 0
133#endif
134#ifndef POSIX_FADV_NOREUSE
135# define POSIX_FADV_NOREUSE 0
136#endif
137#ifndef POSIX_FADV_WILLNEED
138# define POSIX_FADV_WILLNEED 0
139#endif
140#ifndef POSIX_FADV_DONTNEED
141# define POSIX_FADV_DONTNEED 0
142#endif
143
144#if !HAVE_POSIX_FADVISE
145# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
146#endif
147
148#ifndef POSIX_MADV_NORMAL
149# define POSIX_MADV_NORMAL 0
150#endif
151#ifndef POSIX_MADV_SEQUENTIAL
152# define POSIX_MADV_SEQUENTIAL 0
153#endif
154#ifndef POSIX_MADV_RANDOM
155# define POSIX_MADV_RANDOM 0
156#endif
157#ifndef POSIX_MADV_WILLNEED
158# define POSIX_MADV_WILLNEED 0
159#endif
160#ifndef POSIX_MADV_DONTNEED
161# define POSIX_MADV_DONTNEED 0
162#endif
163
164#if !HAVE_POSIX_MADVISE
165# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
166#endif
167
168#ifndef PROT_NONE
169# define PROT_NONE 0
170#endif
171#ifndef PROT_READ
172# define PROT_READ 0
173#endif
174#ifndef PROT_WRITE
175# define PROT_READ 0
176#endif
177#ifndef PROT_EXEC
178# define PROT_EXEC 0
179#endif
180
181#ifndef ST_NODEV
182# define ST_NODEV 0
183#endif
184#ifndef ST_NOEXEC
185# define ST_NOEXEC 0
186#endif
187#ifndef ST_SYNCHRONOUS
188# define ST_SYNCHRONOUS 0
189#endif
190#ifndef ST_MANDLOCK
191# define ST_MANDLOCK 0
192#endif
193#ifndef ST_WRITE
194# define ST_WRITE 0
195#endif
196#ifndef ST_APPEND
197# define ST_APPEND 0
198#endif
199#ifndef ST_IMMUTABLE
200# define ST_IMMUTABLE 0
201#endif
202#ifndef ST_NOATIME
203# define ST_NOATIME 0
204#endif
205#ifndef ST_NODIRATIME
206# define ST_NODIRATIME 0
207#endif
208#ifndef ST_RELATIME
209# define ST_RELATIME 0
210#endif
211
212#ifndef MAP_ANONYMOUS
213# ifdef MAP_ANON
214# define MAP_ANONYMOUS MAP_ANON
215# else
216# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28#endif 217# endif
218#endif
219#ifndef MAP_HUGETLB
220# define MAP_HUGETLB 0
221#endif
222#ifndef MAP_LOCKED
223# define MAP_LOCKED 0
224#endif
225#ifndef MAP_NORESERVE
226# define MAP_NORESERVE 0
227#endif
228#ifndef MAP_POPULATE
229# define MAP_POPULATE 0
230#endif
231#ifndef MAP_NONBLOCK
232# define MAP_NONBLOCK 0
233#endif
234
235#ifndef PAGESIZE
236# define PAGESIZE sysconf (_SC_PAGESIZE)
237#endif
238
239static int req_invoke (eio_req *req);
240#define EIO_FINISH(req) req_invoke (req)
241static void req_destroy (eio_req *grp);
242#define EIO_DESTROY(req) req_destroy (req)
29 243
30enum { 244enum {
31 REQ_QUIT, 245 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35 REQ_FSYNC, REQ_FDATASYNC,
36}; 246};
37 247
38typedef struct aio_cb { 248#include "libeio/eio.c"
39 struct aio_cb *volatile next;
40 249
41 int type;
42
43 int fd;
44 off_t offset;
45 size_t length;
46 ssize_t result;
47 mode_t mode; /* open */
48 int errorno;
49 SV *data, *callback;
50 void *dataptr;
51 STRLEN dataoffset;
52
53 Stat_t *statdata;
54} aio_cb;
55
56typedef aio_cb *aio_req; 250typedef eio_req *aio_req;
251typedef eio_req *aio_req_ornot;
57 252
58static int started; 253static SV *on_next_submit;
59static volatile int nreqs; 254static int next_pri = EIO_PRI_DEFAULT;
60static int max_outstanding = 1<<30; 255static int max_outstanding;
61static int respipe [2];
62 256
63static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 257static s_epipe respipe;
64static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
65static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
66 258
67static volatile aio_req reqs, reqe; /* queue start, queue end */ 259static void req_destroy (aio_req req);
68static volatile aio_req ress, rese; /* queue start, queue end */ 260static void req_cancel (aio_req req);
69 261
70static void 262static void want_poll (void)
71poll_wait ()
72{ 263{
73 if (nreqs && !ress) 264 /* write a dummy byte to the pipe so fh becomes ready */
265 s_epipe_signal (&respipe);
266}
267
268static void done_poll (void)
269{
270 /* read any signals sent by the worker threads */
271 s_epipe_drain (&respipe);
272}
273
274/* must be called at most once */
275static SV *req_sv (aio_req req, HV *stash)
276{
277 if (!req->self)
74 { 278 {
75 fd_set rfd; 279 req->self = (SV *)newHV ();
76 FD_ZERO(&rfd); 280 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
77 FD_SET(respipe [0], &rfd);
78
79 select (respipe [0] + 1, &rfd, 0, 0, 0);
80 } 281 }
81}
82 282
83static int 283 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
84poll_cb () 284}
85{
86 dSP;
87 int count = 0;
88 aio_req req, prv;
89 285
90 pthread_mutex_lock (&reslock); 286static aio_req SvAIO_REQ (SV *sv)
287{
288 MAGIC *mg;
91 289
92 { 290 if (!SvROK (sv)
93 /* read any signals sent by the worker threads */ 291 || (SvSTASH (SvRV (sv)) != aio_grp_stash
94 char buf [32]; 292 && SvSTASH (SvRV (sv)) != aio_req_stash
95 while (read (respipe [0], buf, 32) > 0) 293 && !sv_derived_from (sv, "IO::AIO::REQ")))
96 ; 294 croak ("object of class IO::AIO::REQ expected");
97 }
98 295
99 req = ress; 296 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
100 ress = rese = 0;
101 297
102 pthread_mutex_unlock (&reslock); 298 return mg ? (aio_req)mg->mg_ptr : 0;
299}
103 300
104 while (req) 301static void aio_grp_feed (aio_req grp)
302{
303 if (grp->sv2 && SvOK (grp->sv2))
105 { 304 {
106 nreqs--; 305 dSP;
107 306
108 if (req->type == REQ_QUIT) 307 ENTER;
109 started--; 308 SAVETMPS;
110 else 309 PUSHMARK (SP);
310 XPUSHs (req_sv (grp, aio_grp_stash));
311 PUTBACK;
312 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
313 SPAGAIN;
314 FREETMPS;
315 LEAVE;
316 }
317}
318
319static void req_submit (eio_req *req)
320{
321 eio_submit (req);
322
323 if (expect_false (on_next_submit))
324 {
325 dSP;
326 SV *cb = sv_2mortal (on_next_submit);
327
328 on_next_submit = 0;
329
330 PUSHMARK (SP);
331 PUTBACK;
332 call_sv (cb, G_DISCARD | G_EVAL);
333 }
334}
335
336static int req_invoke (eio_req *req)
337{
338 if (req->flags & FLAG_SV2_RO_OFF)
339 SvREADONLY_off (req->sv2);
340
341 if (!EIO_CANCELLED (req) && req->callback)
342 {
343 dSP;
344 static SV *sv_result_cache; /* caches the result integer SV */
345 SV *sv_result;
346
347 ENTER;
348 SAVETMPS;
349 PUSHMARK (SP);
350 EXTEND (SP, 1);
351
352 /* do not recreate the result IV from scratch each time */
353 if (expect_true (sv_result_cache))
111 { 354 {
112 int errorno = errno; 355 sv_result = sv_result_cache; sv_result_cache = 0;
113 errno = req->errorno; 356 SvIV_set (sv_result, req->result);
114
115 if (req->type == REQ_READ)
116 SvCUR_set (req->data, req->dataoffset
117 + req->result > 0 ? req->result : 0);
118
119 if (req->data)
120 SvREFCNT_dec (req->data);
121
122 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
123 {
124 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
125 PL_laststatval = req->result;
126 PL_statcache = *(req->statdata);
127
128 Safefree (req->statdata);
129 }
130
131 PUSHMARK (SP);
132 XPUSHs (sv_2mortal (newSViv (req->result)));
133
134 if (req->type == REQ_OPEN)
135 {
136 /* convert fd to fh */
137 SV *fh;
138
139 PUTBACK;
140 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
141 SPAGAIN;
142
143 fh = POPs;
144
145 PUSHMARK (SP);
146 XPUSHs (fh);
147 }
148
149 if (SvOK (req->callback))
150 {
151 PUTBACK;
152 call_sv (req->callback, G_VOID | G_EVAL);
153 SPAGAIN;
154 }
155
156 if (req->callback)
157 SvREFCNT_dec (req->callback);
158
159 errno = errorno;
160 count++;
161 }
162
163 prv = req;
164 req = req->next;
165 Safefree (prv);
166
167 /* TODO: croak on errors? */
168 }
169
170 return count;
171}
172
173static void *aio_proc(void *arg);
174
175static void
176start_thread (void)
177{
178 sigset_t fullsigset, oldsigset;
179 pthread_t tid;
180 pthread_attr_t attr;
181
182 pthread_attr_init (&attr);
183 pthread_attr_setstacksize (&attr, STACKSIZE);
184 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
185
186 sigfillset (&fullsigset);
187 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
188
189 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
190 started++;
191
192 sigprocmask (SIG_SETMASK, &oldsigset, 0);
193}
194
195static void
196send_req (aio_req req)
197{
198 nreqs++;
199
200 pthread_mutex_lock (&reqlock);
201
202 req->next = 0;
203
204 if (reqe)
205 {
206 reqe->next = req;
207 reqe = req;
208 }
209 else
210 reqe = reqs = req;
211
212 pthread_cond_signal (&reqwait);
213 pthread_mutex_unlock (&reqlock);
214
215 while (nreqs > max_outstanding)
216 {
217 poll_wait ();
218 poll_cb ();
219 }
220}
221
222static void
223end_thread (void)
224{
225 aio_req req;
226 New (0, req, 1, aio_cb);
227 req->type = REQ_QUIT;
228
229 send_req (req);
230}
231
232static void
233read_write (int dowrite, int fd, off_t offset, size_t length,
234 SV *data, STRLEN dataoffset, SV *callback)
235{
236 aio_req req;
237 STRLEN svlen;
238 char *svptr = SvPV (data, svlen);
239
240 SvUPGRADE (data, SVt_PV);
241 SvPOK_on (data);
242
243 if (dataoffset < 0)
244 dataoffset += svlen;
245
246 if (dataoffset < 0 || dataoffset > svlen)
247 croak ("data offset outside of string");
248
249 if (dowrite)
250 {
251 /* write: check length and adjust. */
252 if (length < 0 || length + dataoffset > svlen)
253 length = svlen - dataoffset;
254 }
255 else
256 {
257 /* read: grow scalar as necessary */
258 svptr = SvGROW (data, length + dataoffset);
259 }
260
261 if (length < 0)
262 croak ("length must not be negative");
263
264 Newz (0, req, 1, aio_cb);
265
266 if (!req)
267 croak ("out of memory during aio_req allocation");
268
269 req->type = dowrite ? REQ_WRITE : REQ_READ;
270 req->fd = fd;
271 req->offset = offset;
272 req->length = length;
273 req->data = SvREFCNT_inc (data);
274 req->dataptr = (char *)svptr + dataoffset;
275 req->callback = SvREFCNT_inc (callback);
276
277 send_req (req);
278}
279
280static void *
281aio_proc (void *thr_arg)
282{
283 aio_req req;
284 int type;
285
286 do
287 {
288 pthread_mutex_lock (&reqlock);
289
290 for (;;)
291 {
292 req = reqs;
293
294 if (reqs)
295 {
296 reqs = reqs->next;
297 if (!reqs) reqe = 0;
298 }
299
300 if (req)
301 break;
302
303 pthread_cond_wait (&reqwait, &reqlock);
304 }
305
306 pthread_mutex_unlock (&reqlock);
307
308 errno = 0; /* strictly unnecessary */
309
310 type = req->type;
311
312 switch (type)
313 {
314 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
315 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
316#if SYS_readahead
317 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318#else
319 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320#endif
321
322 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
323 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325
326 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
327 case REQ_CLOSE: req->result = close (req->fd); break;
328 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
329
330 case REQ_FSYNC: req->result = fsync (req->fd); break;
331 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
332
333 case REQ_QUIT:
334 break;
335
336 default:
337 req->result = ENOSYS;
338 break;
339 }
340
341 req->errorno = errno;
342
343 pthread_mutex_lock (&reslock);
344
345 req->next = 0;
346
347 if (rese)
348 {
349 rese->next = req;
350 rese = req;
351 } 357 }
352 else 358 else
353 { 359 {
354 rese = ress = req; 360 sv_result = newSViv (req->result);
355 361 SvREADONLY_on (sv_result);
356 /* write a dummy byte to the pipe so fh becomes ready */
357 write (respipe [1], &respipe, 1);
358 } 362 }
359 363
360 pthread_mutex_unlock (&reslock); 364 switch (req->type)
365 {
366 case EIO_READDIR:
367 {
368 SV *rv = &PL_sv_undef;
369
370 if (req->result >= 0)
371 {
372 int i;
373 char *names = (char *)req->ptr2;
374 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
375 AV *av = newAV ();
376
377 av_extend (av, req->result - 1);
378
379 for (i = 0; i < req->result; ++i)
380 {
381 if (req->int1 & EIO_READDIR_DENTS)
382 {
383 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
384
385 if (req->int1 & EIO_READDIR_CUSTOM2)
386 {
387 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
388 AV *avent = newAV ();
389
390 av_extend (avent, 2);
391
392 if (!sv_type [ent->type])
393 {
394 sv_type [ent->type] = newSViv (ent->type);
395 SvREADONLY_on (sv_type [ent->type]);
396 }
397
398 av_store (avent, 0, namesv);
399 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
400 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
401
402 av_store (av, i, newRV_noinc ((SV *)avent));
403 }
404 else
405 av_store (av, i, namesv);
406
407 ++ent;
408 }
409 else
410 {
411 SV *name = newSVpv (names, 0);
412 av_store (av, i, name);
413 names += SvCUR (name) + 1;
414 }
415 }
416
417 rv = sv_2mortal (newRV_noinc ((SV *)av));
418 }
419
420 PUSHs (rv);
421
422 if (req->int1 & EIO_READDIR_CUSTOM1)
423 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
424 }
425 break;
426
427 case EIO_OPEN:
428 {
429 /* convert fd to fh */
430 SV *fh = &PL_sv_undef;
431
432 if (req->result >= 0)
433 {
434 GV *gv = (GV *)sv_newmortal ();
435 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
436 char sym [64];
437 int symlen;
438
439 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
440 gv_init (gv, aio_stash, sym, symlen, 0);
441
442 symlen = snprintf (
443 sym,
444 sizeof (sym),
445 "%s&=%d",
446 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
447 (int)req->result
448 );
449
450 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
451 fh = (SV *)gv;
452 }
453
454 PUSHs (fh);
455 }
456 break;
457
458 case EIO_STATVFS:
459 case EIO_FSTATVFS:
460 {
461 SV *rv = &PL_sv_undef;
462
463 if (req->result >= 0)
464 {
465 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
466 HV *hv = newHV ();
467
468 rv = sv_2mortal (newRV_noinc ((SV *)hv));
469
470 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
471 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
472 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
473 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
474 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
475 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
476 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
477 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
478 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
479 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
480 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
481 }
482
483 PUSHs (rv);
484 }
485
486 break;
487
488 case EIO_GROUP:
489 req->int1 = 2; /* mark group as finished */
490
491 if (req->sv1)
492 {
493 int i;
494 AV *av = (AV *)req->sv1;
495
496 EXTEND (SP, AvFILL (av) + 1);
497 for (i = 0; i <= AvFILL (av); ++i)
498 PUSHs (*av_fetch (av, i, 0));
499 }
500 break;
501
502 case EIO_NOP:
503 case EIO_BUSY:
504 break;
505
506 case EIO_READLINK:
507 if (req->result > 0)
508 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
509 break;
510
511 case EIO_STAT:
512 case EIO_LSTAT:
513 case EIO_FSTAT:
514 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
515 PL_laststatval = req->result;
516 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
517 PUSHs (sv_result);
518 break;
519
520 case EIO_READ:
521 {
522 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
523 *SvEND (req->sv2) = 0;
524 SvPOK_only (req->sv2);
525 SvSETMAGIC (req->sv2);
526 PUSHs (sv_result);
527 }
528 break;
529
530 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
531 if (req->result > 0)
532 SvIV_set (sv_result, 0);
533 /* FALLTHROUGH */
534
535 default:
536 PUSHs (sv_result);
537 break;
538 }
539
540 errno = req->errorno;
541
542 PUTBACK;
543 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
544 SPAGAIN;
545
546 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
547 SvREFCNT_dec (sv_result);
548 else
549 sv_result_cache = sv_result;
550
551 FREETMPS;
552 LEAVE;
553
554 PUTBACK;
361 } 555 }
362 while (type != REQ_QUIT); 556
557 return !!SvTRUE (ERRSV);
558}
559
560static void req_destroy (aio_req req)
561{
562 if (req->self)
563 {
564 sv_unmagic (req->self, PERL_MAGIC_ext);
565 SvREFCNT_dec (req->self);
566 }
567
568 SvREFCNT_dec (req->sv1);
569 SvREFCNT_dec (req->sv2);
570 SvREFCNT_dec (req->callback);
571
572 Safefree (req);
573}
574
575static void req_cancel_subs (aio_req grp)
576{
577 aio_req sub;
578
579 if (grp->type != EIO_GROUP)
580 return;
581
582 SvREFCNT_dec (grp->sv2);
583 grp->sv2 = 0;
584
585 eio_grp_cancel (grp);
586}
587
588static void
589create_respipe (void)
590{
591 if (s_epipe_renew (&respipe))
592 croak ("IO::AIO: unable to initialize result pipe");
593}
594
595static void poll_wait (void)
596{
597 while (eio_nreqs ())
598 {
599 int size;
600
601 X_LOCK (reslock);
602 size = res_queue.size;
603 X_UNLOCK (reslock);
604
605 if (size)
606 return;
607
608 etp_maybe_start_thread ();
609
610 s_epipe_wait (&respipe);
611 }
612}
613
614static int poll_cb (void)
615{
616 for (;;)
617 {
618 int res = eio_poll ();
619
620 if (res > 0)
621 croak (0);
622
623 if (!max_outstanding || max_outstanding > eio_nreqs ())
624 return res;
625
626 poll_wait ();
627 }
628}
629
630static void atfork_child (void)
631{
632 create_respipe ();
633}
634
635/*****************************************************************************/
636
637#if !_POSIX_MAPPED_FILES
638# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
639# define munmap(addr,length) (errno = ENOSYS, -1)
640# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
641# define PROT_NONE 0
642# define PROT_WRITE 0
643# define MAP_PRIVATE 0
644# define MAP_SHARED 0
645# define MAP_FIXED 0
646#endif
647
648#define MMAP_MAGIC PERL_MAGIC_ext
649
650static int
651mmap_free (pTHX_ SV *sv, MAGIC *mg)
652{
653 int old_errno = errno;
654 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
655 errno = old_errno;
656
657 mg->mg_obj = 0; /* just in case */
658
659 SvREADONLY_off (sv);
660
661 if (SvPVX (sv) != mg->mg_ptr)
662 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
663
664 SvCUR_set (sv, 0);
665 SvPVX (sv) = 0;
666 SvOK_off (sv);
363 667
364 return 0; 668 return 0;
365} 669}
366 670
671static MGVTBL mmap_vtbl = {
672 0, 0, 0, 0, mmap_free
673};
674
675/*****************************************************************************/
676
677static SV *
678get_cb (SV *cb_sv)
679{
680 SvGETMAGIC (cb_sv);
681 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
682}
683
684#define dREQ \
685 SV *cb_cv; \
686 aio_req req; \
687 int req_pri = next_pri; \
688 next_pri = EIO_PRI_DEFAULT; \
689 \
690 cb_cv = get_cb (callback); \
691 \
692 Newz (0, req, 1, eio_req); \
693 if (!req) \
694 croak ("out of memory during eio_req allocation"); \
695 \
696 req->callback = SvREFCNT_inc (cb_cv); \
697 req->pri = req_pri
698
699#define REQ_SEND \
700 PUTBACK; \
701 req_submit (req); \
702 SPAGAIN; \
703 \
704 if (GIMME_V != G_VOID) \
705 XPUSHs (req_sv (req, aio_req_stash));
706
367MODULE = IO::AIO PACKAGE = IO::AIO 707MODULE = IO::AIO PACKAGE = IO::AIO
368 708
369PROTOTYPES: ENABLE 709PROTOTYPES: ENABLE
370 710
371BOOT: 711BOOT:
372{ 712{
373 if (pipe (respipe)) 713 static const struct {
374 croak ("unable to initialize result pipe"); 714 const char *name;
715 IV iv;
716 } *civ, const_iv[] = {
717# define const_niv(name, value) { # name, (IV) value },
718# define const_iv(name) { # name, (IV) name },
719# define const_eio(name) { # name, (IV) EIO_ ## name },
720 const_iv (EXDEV)
721 const_iv (ENOSYS)
722 const_iv (O_RDONLY)
723 const_iv (O_WRONLY)
724 const_iv (O_RDWR)
725 const_iv (O_CREAT)
726 const_iv (O_TRUNC)
727 const_iv (O_EXCL)
728 const_iv (O_APPEND)
729#ifndef _WIN32
730 const_iv (S_IFIFO)
731#endif
732 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
733 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
734 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
735 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
736 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
737 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
375 738
376 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 739 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
377 croak ("cannot set result pipe to nonblocking mode"); 740 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
741 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
742 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
743 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
378 744
379 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 745 const_iv (ST_RDONLY)
380 croak ("cannot set result pipe to nonblocking mode"); 746 const_iv (ST_NOSUID)
381} 747 const_iv (ST_NODEV)
748 const_iv (ST_NOEXEC)
749 const_iv (ST_SYNCHRONOUS)
750 const_iv (ST_MANDLOCK)
751 const_iv (ST_WRITE)
752 const_iv (ST_APPEND)
753 const_iv (ST_IMMUTABLE)
754 const_iv (ST_NOATIME)
755 const_iv (ST_NODIRATIME)
756 const_iv (ST_RELATIME)
382 757
758 const_iv (PROT_NONE)
759 const_iv (PROT_EXEC)
760 const_iv (PROT_READ)
761 const_iv (PROT_WRITE)
762
763 /*const_iv (MAP_FIXED)*/
764 const_iv (MAP_PRIVATE)
765 const_iv (MAP_SHARED)
766 const_iv (MAP_ANONYMOUS)
767
768 /* linuxish */
769 const_iv (MAP_HUGETLB)
770 const_iv (MAP_LOCKED)
771 const_iv (MAP_NORESERVE)
772 const_iv (MAP_POPULATE)
773 const_iv (MAP_NONBLOCK)
774
775 const_eio (MCL_FUTURE)
776 const_eio (MCL_CURRENT)
777
778 const_eio (MS_ASYNC)
779 const_eio (MS_INVALIDATE)
780 const_eio (MS_SYNC)
781
782 const_eio (MT_MODIFY)
783
784 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
785 const_eio (SYNC_FILE_RANGE_WRITE)
786 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
787
788 const_eio (READDIR_DENTS)
789 const_eio (READDIR_DIRS_FIRST)
790 const_eio (READDIR_STAT_ORDER)
791 const_eio (READDIR_FOUND_UNKNOWN)
792
793 const_eio (DT_UNKNOWN)
794 const_eio (DT_FIFO)
795 const_eio (DT_CHR)
796 const_eio (DT_DIR)
797 const_eio (DT_BLK)
798 const_eio (DT_REG)
799 const_eio (DT_LNK)
800 const_eio (DT_SOCK)
801 const_eio (DT_WHT)
802 };
803
804 aio_stash = gv_stashpv ("IO::AIO" , 1);
805 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
806 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
807
808 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
809 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
810
811 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
812
813 create_respipe ();
814
815 if (eio_init (want_poll, done_poll) < 0)
816 croak ("IO::AIO: unable to initialise eio library");
817
818 /* atfork child called in fifo order, so before eio's handler */
819 X_THREAD_ATFORK (0, 0, atfork_child);
820}
821
383void 822void
384min_parallel(nthreads) 823max_poll_reqs (int nreqs)
385 int nthreads
386 PROTOTYPE: $ 824 PROTOTYPE: $
387 CODE: 825 CODE:
388 while (nthreads > started) 826 eio_set_max_poll_reqs (nreqs);
389 start_thread ();
390 827
391void 828void
392max_parallel(nthreads) 829max_poll_time (double nseconds)
393 int nthreads
394 PROTOTYPE: $ 830 PROTOTYPE: $
395 CODE: 831 CODE:
832 eio_set_max_poll_time (nseconds);
833
834void
835min_parallel (int nthreads)
836 PROTOTYPE: $
837 CODE:
838 eio_set_min_parallel (nthreads);
839
840void
841max_parallel (int nthreads)
842 PROTOTYPE: $
843 CODE:
844 eio_set_max_parallel (nthreads);
845
846void
847max_idle (int nthreads)
848 PROTOTYPE: $
849 CODE:
850 eio_set_max_idle (nthreads);
851
852void
853max_outstanding (int maxreqs)
854 PROTOTYPE: $
855 CODE:
856 max_outstanding = maxreqs;
857
858void
859aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
860 PPCODE:
396{ 861{
397 int cur = started; 862 dREQ;
398 while (cur > nthreads) 863
399 { 864 req->type = EIO_OPEN;
400 end_thread (); 865 req->sv1 = newSVsv (pathname);
401 cur--; 866 req->ptr1 = SvPVbyte_nolen (req->sv1);
867 req->int1 = flags;
868 req->int2 = mode;
869
870 REQ_SEND;
871}
872
873void
874aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
875 ALIAS:
876 aio_fsync = EIO_FSYNC
877 aio_fdatasync = EIO_FDATASYNC
878 PPCODE:
879{
880 int fd = s_fileno_croak (fh, 0);
881 dREQ;
882
883 req->type = ix;
884 req->sv1 = newSVsv (fh);
885 req->int1 = fd;
886
887 REQ_SEND (req);
888}
889
890void
891aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
892 PPCODE:
893{
894 int fd = s_fileno_croak (fh, 0);
895 dREQ;
896
897 req->type = EIO_SYNC_FILE_RANGE;
898 req->sv1 = newSVsv (fh);
899 req->int1 = fd;
900 req->offs = offset;
901 req->size = nbytes;
902 req->int2 = flags;
903
904 REQ_SEND (req);
905}
906
907void
908aio_close (SV *fh, SV *callback=&PL_sv_undef)
909 PPCODE:
910{
911 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
912 int fd = s_fileno_croak (fh, 0);
913 dREQ;
914
915 if (close_pipe < 0)
916 {
917 int pipefd [2];
918
919 if (pipe (pipefd) < 0
920 || close (pipefd [1]) < 0
921 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
922 abort (); /*D*/
923
924 close_pipe = pipefd [0];
402 } 925 }
403 926
404 while (started > nthreads) 927 req->type = EIO_DUP2;
928 req->int1 = close_pipe;
929 req->sv2 = newSVsv (fh);
930 req->int2 = fd;
931
932 REQ_SEND (req);
933}
934
935void
936aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
937 ALIAS:
938 aio_read = EIO_READ
939 aio_write = EIO_WRITE
940 PPCODE:
941{
942 STRLEN svlen;
943 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
944 char *svptr = SvPVbyte (data, svlen);
945 UV len = SvUV (length);
946
947 if (dataoffset < 0)
948 dataoffset += svlen;
949
950 if (dataoffset < 0 || dataoffset > svlen)
951 croak ("dataoffset outside of data scalar");
952
953 if (ix == EIO_WRITE)
954 {
955 /* write: check length and adjust. */
956 if (!SvOK (length) || len + dataoffset > svlen)
957 len = svlen - dataoffset;
958 }
959 else
960 {
961 /* read: check type and grow scalar as necessary */
962 SvUPGRADE (data, SVt_PV);
963 svptr = SvGROW (data, len + dataoffset + 1);
964 }
965
966 {
967 dREQ;
968
969 req->type = ix;
970 req->sv1 = newSVsv (fh);
971 req->int1 = fd;
972 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
973 req->size = len;
974 req->sv2 = SvREFCNT_inc (data);
975 req->ptr2 = (char *)svptr + dataoffset;
976 req->stroffset = dataoffset;
977
978 if (!SvREADONLY (data))
979 {
980 SvREADONLY_on (data);
981 req->flags |= FLAG_SV2_RO_OFF;
982 }
983
984 REQ_SEND;
985 }
986}
987
988void
989aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
990 PPCODE:
991{
992 SV *data;
993 dREQ;
994
995 req->type = EIO_READLINK;
996 req->sv1 = newSVsv (path);
997 req->ptr1 = SvPVbyte_nolen (req->sv1);
998
999 REQ_SEND;
1000}
1001
1002void
1003aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1004 PPCODE:
1005{
1006 int ifd = s_fileno_croak (in_fh , 0);
1007 int ofd = s_fileno_croak (out_fh, 1);
1008 dREQ;
1009
1010 req->type = EIO_SENDFILE;
1011 req->sv1 = newSVsv (out_fh);
1012 req->int1 = ofd;
1013 req->sv2 = newSVsv (in_fh);
1014 req->int2 = ifd;
1015 req->offs = in_offset;
1016 req->size = length;
1017
1018 REQ_SEND;
1019}
1020
1021void
1022aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1023 PPCODE:
1024{
1025 int fd = s_fileno_croak (fh, 0);
1026 dREQ;
1027
1028 req->type = EIO_READAHEAD;
1029 req->sv1 = newSVsv (fh);
1030 req->int1 = fd;
1031 req->offs = offset;
1032 req->size = length;
1033
1034 REQ_SEND;
1035}
1036
1037void
1038aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1039 ALIAS:
1040 aio_stat = EIO_STAT
1041 aio_lstat = EIO_LSTAT
1042 aio_statvfs = EIO_STATVFS
1043 PPCODE:
1044{
1045 dREQ;
1046
1047 req->sv1 = newSVsv (fh_or_path);
1048
1049 if (SvPOK (req->sv1))
1050 {
1051 req->type = ix;
1052 req->ptr1 = SvPVbyte_nolen (req->sv1);
1053 }
1054 else
1055 {
1056 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1057 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1058 }
1059
1060 REQ_SEND;
1061}
1062
1063void
1064aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1065 PPCODE:
1066{
1067 dREQ;
1068
1069 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1070 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1071 req->sv1 = newSVsv (fh_or_path);
1072
1073 if (SvPOK (req->sv1))
1074 {
1075 req->type = EIO_UTIME;
1076 req->ptr1 = SvPVbyte_nolen (req->sv1);
1077 }
1078 else
1079 {
1080 req->type = EIO_FUTIME;
1081 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1082 }
1083
1084 REQ_SEND;
1085}
1086
1087void
1088aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1089 PPCODE:
1090{
1091 dREQ;
1092
1093 req->sv1 = newSVsv (fh_or_path);
1094 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1095
1096 if (SvPOK (req->sv1))
1097 {
1098 req->type = EIO_TRUNCATE;
1099 req->ptr1 = SvPVbyte_nolen (req->sv1);
1100 }
1101 else
1102 {
1103 req->type = EIO_FTRUNCATE;
1104 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1105 }
1106
1107 REQ_SEND;
1108}
1109
1110void
1111aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1112 ALIAS:
1113 aio_chmod = EIO_CHMOD
1114 aio_mkdir = EIO_MKDIR
1115 PPCODE:
1116{
1117 dREQ;
1118
1119 req->int2 = mode;
1120 req->sv1 = newSVsv (fh_or_path);
1121
1122 if (SvPOK (req->sv1))
1123 {
1124 req->type = ix;
1125 req->ptr1 = SvPVbyte_nolen (req->sv1);
1126 }
1127 else
1128 {
1129 req->type = EIO_FCHMOD;
1130 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1131 }
1132
1133 REQ_SEND;
1134}
1135
1136void
1137aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1138 PPCODE:
1139{
1140 dREQ;
1141
1142 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1143 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1144 req->sv1 = newSVsv (fh_or_path);
1145
1146 if (SvPOK (req->sv1))
1147 {
1148 req->type = EIO_CHOWN;
1149 req->ptr1 = SvPVbyte_nolen (req->sv1);
1150 }
1151 else
1152 {
1153 req->type = EIO_FCHOWN;
1154 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1155 }
1156
1157 REQ_SEND;
1158}
1159
1160void
1161aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1162 PPCODE:
1163{
1164 dREQ;
1165
1166 req->type = EIO_READDIR;
1167 req->sv1 = newSVsv (pathname);
1168 req->ptr1 = SvPVbyte_nolen (req->sv1);
1169 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1170
1171 if (flags & EIO_READDIR_DENTS)
1172 req->int1 |= EIO_READDIR_CUSTOM2;
1173
1174 REQ_SEND;
1175}
1176
1177void
1178aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1179 ALIAS:
1180 aio_unlink = EIO_UNLINK
1181 aio_rmdir = EIO_RMDIR
1182 aio_readdir = EIO_READDIR
1183 PPCODE:
1184{
1185 dREQ;
1186
1187 req->type = ix;
1188 req->sv1 = newSVsv (pathname);
1189 req->ptr1 = SvPVbyte_nolen (req->sv1);
1190
1191 REQ_SEND;
1192}
1193
1194void
1195aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1196 ALIAS:
1197 aio_link = EIO_LINK
1198 aio_symlink = EIO_SYMLINK
1199 aio_rename = EIO_RENAME
1200 PPCODE:
1201{
1202 dREQ;
1203
1204 req->type = ix;
1205 req->sv1 = newSVsv (oldpath);
1206 req->ptr1 = SvPVbyte_nolen (req->sv1);
1207 req->sv2 = newSVsv (newpath);
1208 req->ptr2 = SvPVbyte_nolen (req->sv2);
1209
1210 REQ_SEND;
1211}
1212
1213void
1214aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1215 PPCODE:
1216{
1217 dREQ;
1218
1219 req->type = EIO_MKNOD;
1220 req->sv1 = newSVsv (pathname);
1221 req->ptr1 = SvPVbyte_nolen (req->sv1);
1222 req->int2 = (mode_t)mode;
1223 req->offs = dev;
1224
1225 REQ_SEND;
1226}
1227
1228void
1229aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1230 ALIAS:
1231 aio_mtouch = EIO_MTOUCH
1232 aio_msync = EIO_MSYNC
1233 PPCODE:
1234{
1235 STRLEN svlen;
1236 char *svptr = SvPVbyte (data, svlen);
1237 UV len = SvUV (length);
1238
1239 if (offset < 0)
1240 offset += svlen;
1241
1242 if (offset < 0 || offset > svlen)
1243 croak ("offset outside of scalar");
1244
1245 if (!SvOK (length) || len + offset > svlen)
1246 len = svlen - offset;
1247
1248 {
1249 dREQ;
1250
1251 req->type = ix;
1252 req->sv2 = SvREFCNT_inc (data);
1253 req->ptr2 = (char *)svptr + offset;
1254 req->size = len;
1255 req->int1 = flags;
1256
1257 REQ_SEND;
1258 }
1259}
1260
1261void
1262aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1263 PPCODE:
1264{
1265 STRLEN svlen;
1266 char *svptr = SvPVbyte (data, svlen);
1267 UV len = SvUV (length);
1268
1269 if (offset < 0)
1270 offset += svlen;
1271
1272 if (offset < 0 || offset > svlen)
1273 croak ("offset outside of scalar");
1274
1275 if (!SvOK (length) || len + offset > svlen)
1276 len = svlen - offset;
1277
1278 {
1279 dREQ;
1280
1281 req->type = EIO_MLOCK;
1282 req->sv2 = SvREFCNT_inc (data);
1283 req->ptr2 = (char *)svptr + offset;
1284 req->size = len;
1285
1286 REQ_SEND;
1287 }
1288}
1289
1290void
1291aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1292 PPCODE:
1293{
1294 dREQ;
1295
1296 req->type = EIO_MLOCKALL;
1297 req->int1 = flags;
1298
1299 REQ_SEND;
1300}
1301
1302void
1303aio_busy (double delay, SV *callback=&PL_sv_undef)
1304 PPCODE:
1305{
1306 dREQ;
1307
1308 req->type = EIO_BUSY;
1309 req->nv1 = delay < 0. ? 0. : delay;
1310
1311 REQ_SEND;
1312}
1313
1314void
1315aio_group (SV *callback=&PL_sv_undef)
1316 PPCODE:
1317{
1318 dREQ;
1319
1320 req->type = EIO_GROUP;
1321
1322 req_submit (req);
1323 XPUSHs (req_sv (req, aio_grp_stash));
1324}
1325
1326void
1327aio_nop (SV *callback=&PL_sv_undef)
1328 ALIAS:
1329 aio_nop = EIO_NOP
1330 aio_sync = EIO_SYNC
1331 PPCODE:
1332{
1333 dREQ;
1334
1335 req->type = ix;
1336
1337 REQ_SEND;
1338}
1339
1340int
1341aioreq_pri (int pri = 0)
1342 CODE:
1343 RETVAL = next_pri;
1344 if (items > 0)
1345 {
1346 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1347 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1348 next_pri = pri;
1349 }
1350 OUTPUT:
1351 RETVAL
1352
1353void
1354aioreq_nice (int nice = 0)
1355 CODE:
1356 nice = next_pri - nice;
1357 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1358 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1359 next_pri = nice;
1360
1361void
1362flush ()
1363 CODE:
1364 while (eio_nreqs ())
405 { 1365 {
406 poll_wait (); 1366 poll_wait ();
407 poll_cb (); 1367 poll_cb ();
408 } 1368 }
409}
410 1369
411int 1370int
412max_outstanding(nreqs) 1371poll ()
413 int nreqs
414 PROTOTYPE: $
415 CODE:
416 RETVAL = max_outstanding;
417 max_outstanding = nreqs;
418
419void
420aio_open(pathname,flags,mode,callback=&PL_sv_undef)
421 SV * pathname
422 int flags
423 int mode
424 SV * callback
425 PROTOTYPE: $$$;$
426 CODE: 1372 CODE:
427{
428 aio_req req;
429
430 Newz (0, req, 1, aio_cb);
431
432 if (!req)
433 croak ("out of memory during aio_req allocation");
434
435 req->type = REQ_OPEN;
436 req->data = newSVsv (pathname);
437 req->dataptr = SvPV_nolen (req->data);
438 req->fd = flags;
439 req->mode = mode;
440 req->callback = SvREFCNT_inc (callback);
441
442 send_req (req);
443}
444
445void
446aio_close(fh,callback=&PL_sv_undef)
447 InputStream fh
448 SV * callback
449 PROTOTYPE: $;$
450 ALIAS:
451 aio_close = REQ_CLOSE
452 aio_fsync = REQ_FSYNC
453 aio_fdatasync = REQ_FDATASYNC
454 CODE:
455{
456 aio_req req;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462
463 req->type = ix;
464 req->fd = PerlIO_fileno (fh);
465 req->callback = SvREFCNT_inc (callback);
466
467 send_req (req);
468}
469
470void
471aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
472 InputStream fh
473 UV offset
474 IV length
475 SV * data
476 IV dataoffset
477 SV * callback
478 PROTOTYPE: $$$$$;$
479 CODE:
480 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
481
482void
483aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
484 OutputStream fh
485 UV offset
486 IV length
487 SV * data
488 IV dataoffset
489 SV * callback
490 PROTOTYPE: $$$$$;$
491 CODE:
492 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
493
494void
495aio_readahead(fh,offset,length,callback=&PL_sv_undef)
496 InputStream fh
497 UV offset
498 IV length
499 SV * callback
500 PROTOTYPE: $$$;$
501 CODE:
502{
503 aio_req req;
504
505 if (length < 0)
506 croak ("length must not be negative");
507
508 Newz (0, req, 1, aio_cb);
509
510 if (!req)
511 croak ("out of memory during aio_req allocation");
512
513 req->type = REQ_READAHEAD;
514 req->fd = PerlIO_fileno (fh);
515 req->offset = offset;
516 req->length = length;
517 req->callback = SvREFCNT_inc (callback);
518
519 send_req (req);
520}
521
522void
523aio_stat(fh_or_path,callback=&PL_sv_undef)
524 SV * fh_or_path
525 SV * callback
526 ALIAS:
527 aio_stat = REQ_STAT
528 aio_lstat = REQ_LSTAT
529 CODE:
530{
531 aio_req req;
532
533 Newz (0, req, 1, aio_cb);
534
535 if (!req)
536 croak ("out of memory during aio_req allocation");
537
538 New (0, req->statdata, 1, Stat_t);
539
540 if (!req->statdata)
541 croak ("out of memory during aio_req->statdata allocation");
542
543 if (SvPOK (fh_or_path))
544 {
545 req->type = ix;
546 req->data = newSVsv (fh_or_path);
547 req->dataptr = SvPV_nolen (req->data);
548 }
549 else
550 {
551 req->type = REQ_FSTAT;
552 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
553 }
554
555 req->callback = SvREFCNT_inc (callback);
556
557 send_req (req);
558}
559
560void
561aio_unlink(pathname,callback=&PL_sv_undef)
562 SV * pathname
563 SV * callback
564 CODE:
565{
566 aio_req req;
567
568 Newz (0, req, 1, aio_cb);
569
570 if (!req)
571 croak ("out of memory during aio_req allocation");
572
573 req->type = REQ_UNLINK;
574 req->data = newSVsv (pathname);
575 req->dataptr = SvPV_nolen (req->data);
576 req->callback = SvREFCNT_inc (callback);
577
578 send_req (req);
579}
580
581void
582flush()
583 PROTOTYPE:
584 CODE:
585 while (nreqs)
586 {
587 poll_wait (); 1373 poll_wait ();
588 poll_cb (); 1374 RETVAL = poll_cb ();
589 }
590
591void
592poll()
593 PROTOTYPE:
594 CODE:
595 if (nreqs)
596 {
597 poll_wait ();
598 poll_cb ();
599 }
600
601int
602poll_fileno()
603 PROTOTYPE:
604 CODE:
605 RETVAL = respipe [0];
606 OUTPUT: 1375 OUTPUT:
607 RETVAL 1376 RETVAL
608 1377
609int 1378int
1379poll_fileno ()
1380 CODE:
1381 RETVAL = s_epipe_fd (&respipe);
1382 OUTPUT:
1383 RETVAL
1384
1385int
610poll_cb(...) 1386poll_cb (...)
611 PROTOTYPE: 1387 PROTOTYPE:
612 CODE: 1388 CODE:
613 RETVAL = poll_cb (); 1389 RETVAL = poll_cb ();
614 OUTPUT: 1390 OUTPUT:
615 RETVAL 1391 RETVAL
616 1392
617void 1393void
618poll_wait() 1394poll_wait ()
619 PROTOTYPE:
620 CODE: 1395 CODE:
621 if (nreqs)
622 poll_wait (); 1396 poll_wait ();
623 1397
624int 1398int
625nreqs() 1399nreqs ()
626 PROTOTYPE:
627 CODE: 1400 CODE:
628 RETVAL = nreqs; 1401 RETVAL = eio_nreqs ();
629 OUTPUT: 1402 OUTPUT:
630 RETVAL 1403 RETVAL
631 1404
1405int
1406nready ()
1407 CODE:
1408 RETVAL = eio_nready ();
1409 OUTPUT:
1410 RETVAL
1411
1412int
1413npending ()
1414 CODE:
1415 RETVAL = eio_npending ();
1416 OUTPUT:
1417 RETVAL
1418
1419int
1420nthreads ()
1421 CODE:
1422 RETVAL = eio_nthreads ();
1423 OUTPUT:
1424 RETVAL
1425
1426int
1427fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1428 CODE:
1429 RETVAL = posix_fadvise (fh, offset, length, advice);
1430 OUTPUT:
1431 RETVAL
1432
1433ssize_t
1434sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1435 CODE:
1436 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1437 OUTPUT:
1438 RETVAL
1439
1440void
1441mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1442 PPCODE:
1443 sv_unmagic (scalar, MMAP_MAGIC);
1444{
1445 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1446 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1447 if (addr == (void *)-1)
1448 XSRETURN_NO;
1449
1450 sv_force_normal (scalar);
1451
1452 /* we store the length in mg_obj, as namlen is I32 :/ */
1453 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1454 ->mg_obj = (SV *)length;
1455
1456 SvUPGRADE (scalar, SVt_PV); /* nop... */
1457
1458 if (!(prot & PROT_WRITE))
1459 SvREADONLY_on (scalar);
1460
1461 if (SvLEN (scalar))
1462 Safefree (SvPVX (scalar));
1463
1464 SvPVX (scalar) = (char *)addr;
1465 SvCUR_set (scalar, length);
1466 SvLEN_set (scalar, 0);
1467 SvPOK_only (scalar);
1468
1469 XSRETURN_YES;
1470}
1471
1472void
1473munmap (SV *scalar)
1474 CODE:
1475 sv_unmagic (scalar, MMAP_MAGIC);
1476
1477int
1478madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1479 ALIAS:
1480 mprotect = 1
1481 CODE:
1482{
1483 STRLEN svlen;
1484 void *addr = SvPVbyte (scalar, svlen);
1485 size_t len = SvUV (length);
1486
1487 if (offset < 0)
1488 offset += svlen;
1489
1490 if (offset < 0 || offset > svlen)
1491 croak ("offset outside of scalar");
1492
1493 if (!SvOK (length) || len + offset > svlen)
1494 len = svlen - offset;
1495
1496 addr = (void *)(((intptr_t)addr) + offset);
1497 eio_page_align (&addr, &len);
1498
1499 switch (ix)
1500 {
1501 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1502 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1503 }
1504}
1505 OUTPUT:
1506 RETVAL
1507
1508int
1509munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1510 CODE:
1511{
1512 STRLEN svlen;
1513 void *addr = SvPVbyte (scalar, svlen);
1514 size_t len = SvUV (length);
1515
1516 if (offset < 0)
1517 offset += svlen;
1518
1519 if (offset < 0 || offset > svlen)
1520 croak ("offset outside of scalar");
1521
1522 if (!SvOK (length) || len + offset > svlen)
1523 len = svlen - offset;
1524
1525 addr = (void *)(((intptr_t)addr) + offset);
1526 eio_page_align (&addr, &len);
1527#if _POSIX_MEMLOCK
1528 RETVAL = munlock (addr, len);
1529#else
1530 RETVAL = ((errno = ENOSYS), -1);
1531#endif
1532}
1533 OUTPUT:
1534 RETVAL
1535
1536int
1537munlockall ()
1538 CODE:
1539#if _POSIX_MEMLOCK
1540 munlockall ();
1541#else
1542 RETVAL = -1;
1543 errno = ENOSYS;
1544#endif
1545 OUTPUT:
1546 RETVAL
1547
1548void _on_next_submit (SV *cb)
1549 CODE:
1550 SvREFCNT_dec (on_next_submit);
1551 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1552
1553PROTOTYPES: DISABLE
1554
1555MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1556
1557void
1558cancel (aio_req_ornot req)
1559 CODE:
1560 eio_cancel (req);
1561
1562void
1563cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1564 PPCODE:
1565{
1566 if (GIMME_V != G_VOID)
1567 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1568
1569 if (items > 1)
1570 {
1571 SV *cb_cv =get_cb (callback);
1572
1573 SvREFCNT_dec (req->callback);
1574 req->callback = SvREFCNT_inc (cb_cv);
1575 }
1576}
1577
1578MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1579
1580void
1581add (aio_req grp, ...)
1582 PPCODE:
1583{
1584 int i;
1585
1586 if (grp->int1 == 2)
1587 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1588
1589 for (i = 1; i < items; ++i )
1590 {
1591 aio_req req;
1592
1593 if (GIMME_V != G_VOID)
1594 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1595
1596 req = SvAIO_REQ (ST (i));
1597
1598 if (req)
1599 eio_grp_add (grp, req);
1600 }
1601}
1602
1603void
1604cancel_subs (aio_req_ornot req)
1605 CODE:
1606 req_cancel_subs (req);
1607
1608void
1609result (aio_req grp, ...)
1610 CODE:
1611{
1612 int i;
1613 AV *av;
1614
1615 grp->errorno = errno;
1616
1617 av = newAV ();
1618 av_extend (av, items - 1);
1619
1620 for (i = 1; i < items; ++i )
1621 av_push (av, newSVsv (ST (i)));
1622
1623 SvREFCNT_dec (grp->sv1);
1624 grp->sv1 = (SV *)av;
1625}
1626
1627void
1628errno (aio_req grp, int errorno = errno)
1629 CODE:
1630 grp->errorno = errorno;
1631
1632void
1633limit (aio_req grp, int limit)
1634 CODE:
1635 eio_grp_limit (grp, limit);
1636
1637void
1638feed (aio_req grp, SV *callback=&PL_sv_undef)
1639 CODE:
1640{
1641 SvREFCNT_dec (grp->sv2);
1642 grp->sv2 = newSVsv (callback);
1643 grp->feed = aio_grp_feed;
1644
1645 if (grp->int2 <= 0)
1646 grp->int2 = 2;
1647
1648 eio_grp_limit (grp, grp->int2);
1649}
1650

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